Factors Affecting the Activity of Catalase and Amylase Lab Answers

Introduction Proteins (or polypeptides) are organic macromolecules consisting of amino acid subunits (monomers) that are arranged in a specific order and folded into a specific shape. These monomers of amino acids are arranged in a specific sequence known as the primary structure which is determined by the DNA of the gene coding that protein. Amino…

Chapter 4 LAB Activity: Eratosthenes and the Earth’s Circumference Answers

Introduction Eratosthenes, a Greek geographer (about 276 to 194 B.C.), made a surprisingly accurate estimate of the Earth’s circumference. The legend follows that Eratosthenes used a deep vertical well near Syene, in southern Egypt which was entirely lit up by the sun at noon once a year as the basis of his calculations. He reasoned…

A Plate Tectonics Flip Book Answers

Around 190 million years ago, Pangaea began to break up. The breakup resulted in two landmasses: Laurasia, the northern group of continents, and Gondwanaland, the southern group of continents; Gondwanaland included South America, Antarctica, Australia, Africa, and India. Breakups! North America: 130 mya Australia: 50 mya India: 90 mya Europe: 30 mya Antarctica: 50 mya…

Snell’s Law Questions/ Answers

Indices of Refraction for Various Media: Medium Index of Refraction (n) Air/vacuum 1.00 Ice 1.31 Water 1.33 Ethyl alcohol 1.36 Vegetable oil 1.47 Acrylic 1.49 Glass 1.52 Diamond 2.42 1. Using Snell’s law, determine the constant when the angle of incidence and the angle of refraction are: a) 50˚ and 30˚                       b) 30˚ and 18˚                      …

PROTEINS

Proteins in the human body have a wide range of functions which include: Hormones (insulin, testosterone), Muscle Fibers (actin, muasin), Carrier Protein (Oxygen carrying hemoglobin), Structure/ Support (nails/ hair), Enzymes (biological catalyst), Membrane Transport (Na/ K pump), Cell-to-Cell Recognition, Antibodies. Structure Proteins are polymers made up of amino acid subunits bonded together by peptide bonds.…

ORGANIC REACTIONS

To simplify the multitude of possible combinations of reactants, organic reactions fall under specific types. Combustion Substitution Addition Elimination Oxidation/reduction Condensation (dehydration synthesis) Hydrolysis (hydration) Polymerization Another tool to simplify your task of predicting products is to remember that functional groups will always react the same way. e.g. all 1o alcohols will react the same…

Valence shell electron pair repulsion (VSEPR) theory

Valence shell electron pair repulsion (VSEPR) theory is a model in chemistry used to predict the shape of individual molecules based upon the extent of electron-pair electrostatic repulsion. It is also named Gillespie-Nyholm theory after its two main developers. The premise of VSEPR is that the valence electron pairs surrounding an atom mutually repel each…